Luc Montagnier is a 2008 Nobel laureate for the discovery of HIV:
Montagnier: "We can be exposed to HIV many times without being chronically infected. Our immune system will get rid of the virus within a few weeks, if you have a good immune system."
Q: "If you have a good immune system, then your body can actually get rid of HIV?!"
Montagnier: "Yes."
Q: "If you take a poor African, and you build up their immune system, is it possible for them to also naturally get rid of it?"
Montagnier: "I would think so."
From the film "House of numbers"